Davis is among several MPs who will put the motion to the House of Commons speaker John Bercow next week, along with the former first minister of Scotland Alex Salmond.

The motion follows the publication of the long-awaited Chilcot report last week, which criticised the ex-PM.

Davis said the report did not provide a "verdict" on the war and that the motion was an attempt to provide one.

Salmond said: "Saying one thing to George Bush in private, and a totally different thing to Parliament and people in public. That's the Parliamentary crime, the offence, and it's time for Parliament to deliver the verdict".